purpose: to report a case of lacrimal sac lymphoma presenting with nasolacrimal obstruction. patient and findings: a 35-year-old woman presented with epiphoria and swelling of the left lacrimal sac area and cervical lymphadenopathy. she had undergone dacryocystorhinostomy (dcr) 6 months before. computed tomography demonstrated a lacrimal sac mass involving the nasal cavity. histopathologic exam...

case presentation a 13-year-old boy, in the case presented in this article, had 15 unerupted teeth, each associated with hyperplastic pericoronal tissue. conclusions the purpose of this article is to report an example of this entity and describe the histopathologic characteristics that helps diagnose and treat such condition in the most appropriate manner. introduction pathologic changes may oc...

the calcifying odontogenic cyst (coc) is a rare odontogenic cyst. only 2% of all odontogenic cysts and tumors are coc. coc associated with odontoma (cocao) reported in 24% of cocs. cocao presents a greater incidence in female, with a ratio of 2 to 1. the highest incidence of cocao occurs during the second decade with a mean age of 16 years, most frequently occurring in the maxilla (61.5%). here...

the study was conducted to determine the type, frequency and severity of gross, histopathologic changes, effect of route of infection and also, tissue tropism of serotype 793/b (4/91) infectious bronchitis virus. 20 day-old specific pathogen free chicks were inoculated intra-tracheally and intra-orally with 793/b serotype and lesions studied histopathologically at interval up to 10 days post-in...

Background Myotonic dystrophy type II (formerly denoted as proximal myotonic myopathy (PROMM)) is an autosomal dominantly inherited disease [1]. Sufferers are afflicted with skeletal muscle (SM) symptoms. Histopathologic changes of the SM include mild fibrosis and fatty degeneration[2]. The multisystemic disorder is also characterized by endocrine and metabolism disorder such as hypercholestero...

Here we report a case of benign intraductal papillary-mucinous neoplasm (IPMN) of the pancreas containing two major subtypes. A 73-year-old man underwent pancreatoduodenectomy for a cystic mass, 5.0 cm in diameter. Histopathologic examinations revealed that IPMN was composed of gastric-type adenoma and intestinal-type borderline lesion. Marked intraluminal nodular growth was observed in the cen...

PURPOSE To compare the virulence of wild-type Candida albicans strains in a murine model of corneal candidiasis and to investigate the role of fungal filamentation in disease progression. METHODS Scarified corneas of immunocompetent or cyclophosphamide-treated BALB/c mice were topically inoculated with one of three human isolates of C. albicans, a homozygous mutant of the pH-dependent filamen...